import Vue from 'vue'
import Vuex from 'vuex'
import {getRequest} from "@/utils/api";
import SockJS from 'sockjs-client'
import Stomp from 'stompjs'
import { Notification } from 'element-ui';

Vue.use(Vuex)
const now = new Date();

const store = new Vuex.Store({
    state: {
        routes: [],
        sessions:{},
        admins:[],
        currentAdmin: JSON.parse(window.sessionStorage.getItem('user')),
        currentSession: null,
        filterKey:'',
        stomp:null,
        isDot:{}
    },
    mutations: {
        INIT_ADMIN(state,admin){
            state.currentAdmin = admin;
        },
        initRoutes(state, data) {
            state.routes = data;
        },
        changeCurrentSession (state,currentSession) {
            state.currentSession = currentSession;
            Vue.set(state.isDot, state.currentAdmin.username+'#'+ state.currentSession.username, false);
        },
        addMessage (state,msg) {
            let mss = state.sessions[state.currentAdmin.username+'#'+msg.to]
            if (!mss){
                //state.sessions[state.currentAdmin.username + '#' + msg.to] = [];
                Vue.set(state.sessions,state.currentAdmin.username + '#' + msg.to,[]);
            }
            state.sessions[state.currentAdmin.username+'#'+msg.to].push({
                content: msg.content,
                date: new Date(),
                self: !msg.notSelf
            })
        },
        INIT_DATA (state) {
            //浏览器本地历史聊天记录
            let data = localStorage.getItem('vue-chat-session');
            //console.log(data)
            if (data) {
                state.sessions = JSON.parse(data);
            }
        },
        INIT_ADMINS(state,data){
            state.admins = data;
        }
    },
    actions: {
        connect(context) {
            context.state.stomp = Stomp.over(new SockJS('/ws/ep'));
            let token = window.sessionStorage.getItem("tokenStr");
            context.state.stomp.connect({'Auth-Token': token}, success => {
                context.state.stomp.subscribe('/user/queue/chat', msg => {
                    // console.log(msg.body)
                    let receiveMsg = JSON.parse(msg.body);
                    if (!context.state.currentSession || receiveMsg.from !== context.state.currentSession.username){
                        Notification.info({
                            title: '【'+receiveMsg.fromNickName+'】发来一条消息！',
                            message: receiveMsg.contentlength > 10 ? receiveMsg.content.substr(0,10) : receiveMsg.content,
                            position: 'bottom-right'
                        })
                        Vue.set(context.state.isDot, context.state.currentAdmin.username+'#'+receiveMsg.from, true);
                    }
                    receiveMsg.notSelf = true;
                    receiveMsg.to = receiveMsg.from;
                    context.commit('addMessage',receiveMsg);
                })
            }, error => {
            })
        },
        initData (context) {
            context.commit('INIT_DATA');
            getRequest('/chat/admin').then(resp=>{
                if (resp){
                    context.commit('INIT_ADMINS',resp);
                }
            })
        }
    }
})

store.watch(function (state) {
    return state.sessions
},function (val) {
    console.log('CHANGE: ', val);
    localStorage.setItem('vue-chat-session', JSON.stringify(val));
},{
    deep:true/*这个貌似是开启watch监测的判断,官方说明也比较模糊*/
})

export default  store